97218969216 has 128 divisors (see below), whose sum is σ = 261185981760. Its totient is φ = 32038256640.

The previous prime is 97218969209. The next prime is 97218969277. The reversal of 97218969216 is 61296981279.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 97218969216.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13930720 + ... + 13937696.

Almost surely, 2^97218969216 is an apocalyptic number.

97218969216 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97218969216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130592990880).

97218969216 is an abundant number, since it is smaller than the sum of its proper divisors (163967012544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97218969216 is a wasteful number, since it uses less digits than its factorization.

97218969216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7402 (or 7390 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 60.

The spelling of 97218969216 in words is "ninety-seven billion, two hundred eighteen million, nine hundred sixty-nine thousand, two hundred sixteen".